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Three vessels mapping bathymetry


Three marine survey vessels are currently acquiring bathymetry data for the MAREANO project. Mapping has got off to a slow start because of strong winds and high seas, but we are hoping to make up some of the lost time.

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MAREANO's spring-cruise was finished in deep water at Storegga


The first MAREANO cruise this year has been successfully finished after a one month survey off Vesterålen/Nordland VI and off North-Trøndelag and Møre. The last 2-3 days were used for video filming in the northern part of the Storegga where both depth and fauna communities varied. In deep water the communities were affected by sub-zero temperatures and a thousands of years old underwater slide.

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Spring cruise on the Mid-Norwegian shelf


The second leg of MAREANO’s spring cruise has now been south to the Mid-Norwegian shelf. One area 3900 square kilometre large between Kristiansund and Halten, and a second 2900 square kilometre on the northern part Storegga have been mapped by video.

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MAREANO finds unknown cold-water coral reefs off mid-Norway


Cruise report: The second part of MAREANO's "spring cruise" is underway and is due to end in Tromsø 22 May after a 10-day cruise off the coast of Trøndelag, mid-Norway. After two days of investigations three unknown coral reefs have been found, of which one is probably a couple of hundred meters long.

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Museums, MAREANO, Maps and Taxonomy


Cruise report: MAREANO continues to accumulate many samples and a multitude of marine organisms. Many of these will be held in the Bergen University Museum and made available for researchers all over the world. The description and classification of organisms is a prime function of museum staff and such taxonomic research has brought us from the National Museum of Wales to the Norwegian Sea.

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MAREANO's spring-cruise


Cruise report: MAREANO's spring-cruise with R/V G.O. Sars has now been going on for about one week. The purpose of this first part of the cruise is to complete the mapping of habitats, benthic fauna and pollutants in the Nordland VI area off Lofoten, while in the second part video-filming will take place in the Storegga area and an area between Kristiansund and Halten.


M.Sc. in environmental chemistry


Ida Bendixen Leinebø recently finished a master’s programme in environmental chemistry at the Department of Chemistry, University of Bergen. During the past two years, she has done her experimental master work at the Chemistry Laboratory at the Institute of Marine Research: analyses of radionuclides in sediment cores collected as part of the MAREANO programme.


MAREANO heads south


So far, the MAREANO project has focused on areas off the counties of Nordland, Troms and Finnmark. This year, areas off Møre og Romsdal will also be surveyed. The aim is to produce biotope maps to assist with the revision of the management plan for the Norwegian Sea by September 2013.

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New measurements of hydrocarbons


The maps with the levels of hydrocarbons are now updated with the results from the 23 locations investigated in 2010. Same as before, the levels are low at all the places where sampling was carried out.

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MAREANO presented in Portugal


Bio-prospecting and benthic mapping were highlighted during the conference “On the exploration and utilizing the resources of the sea” that was arranged in historical environments in Lisbon on Wednesday Dec 14. MAREANO was among the invited speakers.

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Tracking the environmental state of the


Modern environmental state and its recent changes can be assessed by studying successions of fine-grained sediments accumulating in shelf basins experiencing very weak or no current. Low current in such basins facilitates continuous deposition, a few millimeters per year, of mud and organic remains that are the main carriers of contamination in the marine environment.

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New sea spider found in Norwegian waters


The sea spider Cilunculus battenae was recently recorded in the Norwegian Economic Zone (NEZ) for the first time, when bottom samples from the MAREANO cruises from 2007-2009 were analysed. So far 21 different species have been found in the samples. Two species have previously been observed in the NEZ a few times.

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Strong Currents and Seabed Habitat Offshore of the Finnmark Coast


The strong currents off the coast of Finnmark are renowned by local seafarers, and our latest observations North of Nordkynnhalvøya are shedding light on what affect these currents are having on the seabed.


"G.O. Sars" discovers geological secrets


During a 500 km long transit from Troms III to Nordland VI the MAREANO project has acquired new data from the upper sediment units. We applied Topas, a kind of strong echosounder sending signals at regular intervals into the seafloor.

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Investigating the shallow areas of Lopphavet in Troms


MAREANO has completed the mapping at Troms III outside of Arnøya, located in Lopphavet in Troms, and is now steaming southwards to Nordland VI, at the southern tip of Lofoten.

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Mapping the seabed of the continental slope west of Sørøya, Northern part o


In the afternoon, the 17. September, the scientific vessel G.O. Sars headed north from Tromsø. The ocean was calm, the wind was warm and the sunset colored the sky. The MAREANO autumn survey had started. We reached our destination north west of the island “Sørøya”, about 71° north, by midnight.

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Successful MAREANO summer cruise comes to an end


This summer’s MAREANO cruise with research vessel “G.O. Sars” ends today in Tromsø, with no time lost due to bad weather or equipment problems we have been very lucky, and have completed all the planned work, and a few extras. The Troms III area offshore north Troms (north Norway) has been the focus of the second leg of the cruise, continuing the good work begun in the first leg. Following video surveys over several previously undocumented coral reefs during the first leg, right at the end of the second leg we were lucky enough to encounter yet another reef, around 20 km north of Vannøya.

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Mapping the sea floor north of Nordkapp


During the summer cruise of 2010, MAREANO completed mapping of a 150 km long and 16 km wide transect on the Nordkappbanken. During three days, R/V "G.O. Sars" made video recordings of the seabed at a total of 18 stations, and the sea bed was sampled with different types of equipment at four stations. Water depth in the mapped area ranges from 230 m to 315 m.

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News and pictures from the MAREANO summer cruise 2010


A quick note from all on board the Norwegian research vessel ‘G.O. Sars’. We are making good progress with the first of two MAREANO cruises to be undertaken this year, and are now mid-way through the second and final leg of this research cruise.

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A general nature-type map for Eggakanten


Mapping the distribution of seabed nature types is an important component of MAREANO. Nature types follow, and contribute to the development of the Norwegian Nature Types classification scheme at the nature-system level.

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2700 metres below sea level

Blue holothurians (sea cucumbers) amongst sea lilies together with brilliantly red shrimps and irregular sea urchins were just some of the astonishing creatures that scientists observed when they earlier this autumn they explored the sea bottom down to 2700 metres depths in Nordland VII, an area off the coast of Northern Norway.
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Investigating the Norwegian continental shelf and deep slopes in the arctic


R/V G.O. Sars left Tromsø harbour 18 September with steady course heading for the “Eggakanten”, the continental shelf break northwest off the Norwegian mainland, approximately half-way to the Bear Island. The mission was to map the seabed as part of the Norwegian mapping programme MAREANO. The cruise is divided in two legs; the first, which we report from here, was undertaken between 18 and 30 September and the second leg which runs from 30 September until 11 October. Onboard were 14 scientists and technicians within the fields of marine taxonomy, geology and chemistry.

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New articles from MAREANO


In the beginning of August (2009) the Norwegian Journal of Geology published a thematic issue with 15 new articles mainly based on results from MAREANO.

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The April 2009 MAREANO cruise


Scientists from the Institute of Marine Research (IMR) and the Geological Survey of Norway (NGU) have started the April 2009 MAREANO cruise (2009105) aboard the "G.O. Sars". The scientific crew includes Norwegians, French, Danish, Canadian, German, Faroese and Finnish. The northernmost study area is located on the continental shelf, approximately 195 nm north of the Norway coast. The 9000 km2 large study area, covered by the cruise, includes depths ranging from 300 to 1000 meters, and will be mapped for benthic fauna, bottom types and environmental status.

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Biodiversity at great depths

The Norwegian seabed mapping programme, MAREANO, has just finished its fourth cruise off northern Norway with the research vessel G.O. Sars. The target of this cruise is deeper slope areas off the counties of Troms and Nordland. The investigation covers several very different marine landscapes including submarine canyons, coral reefs, moraines, sand dunes and consolidated clay with rough topography.